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Note 8 - Contingencies (Detail)	3 Months Ended
Note 8 - Contingencies (Detail)	Mar. 31, 2013
Number of Lawsuits, Current	8
Number of Plaintiffs Behind Lawsuits	4

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- Definition

No authoritative reference available.

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+ Details

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Namespace Prefix:	cdzi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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- Definition

No authoritative reference available.

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+ Details

Name:	cdzi_NumberOfPlaintiffsBehindLawsuits
Namespace Prefix:	cdzi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration